Orange, CA population age distribution
A complete breakdown of Orange's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.
Age Group | Population | % of Total Population |
---|---|---|
Under 5 years | 7,427 | 5.34% |
5 to 9 years | 7,906 | 5.68% |
10 to 14 years | 7,980 | 5.73% |
15 to 19 years | 9,594 | 6.89% |
20 to 24 years | 11,337 | 8.14% |
25 to 29 years | 11,516 | 8.27% |
30 to 34 years | 11,555 | 8.3% |
35 to 39 years | 10,084 | 7.24% |
40 to 44 years | 8,188 | 5.88% |
45 to 49 years | 9,212 | 6.62% |
50 to 54 years | 8,823 | 6.34% |
55 to 59 years | 9,064 | 6.51% |
60 to 64 years | 7,388 | 5.31% |
65 to 69 years | 6,691 | 4.81% |
70 to 74 years | 4,753 | 3.41% |
75 to 79 years | 3,328 | 2.39% |
80 to 84 years | 2,136 | 1.53% |
85 years and over | 2,213 | 1.59% |
TABLE OF CONTENTS
Orange, CA population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The largest age group in Orange, CA was for the group of age 30-34 years with a population of 11,555 (8.30%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Orange, CA was the 80-84 years with a population of 2,136 (1.53%).
Orange, CA population by age cohort
To better understand the age distribution of Orange, CA's population, we divided it into the following 3 cohorts:
- Children : Under the age of 18 years
- Adults (working population): Between the age of 18 and 64 years
- Seniors: 65 years and above

Here's the population for each of the three cohorts.
Age Group | Population | % of Total Population |
---|---|---|
Under 18 years | 28,774 | 20.67% |
18 to 64 years | 91,300 | 65.59% |
85 years and over | 19,121 | 13.74% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Orange's population under 18 was 20.67%, compared to the 22.51% nationwide.
- Orange's working population (between 18 and 64) was 65.59%, compared to 61.45% nationwide.
- Orange's elderly or the senior population (over 65 age) was 13.74% as compared to 16.04% nationwide.
Orange, CA population pyramid
Population pyramid for Orange, CA is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.
Key stats from our analysis of the Orange's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Orange, CA, is 24.1.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Orange, CA, is 19.8.
- Total dependency ratio for Orange, CA is 43.9.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Orange, CA is 5.1.

Here's the Orange, CA's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 3,446 | 3,981 | 7,427 |
5 to 9 years | 4,124 | 3,782 | 7,906 |
10 to 14 years | 4,055 | 3,925 | 7,980 |
15 to 19 years | 5,170 | 4,424 | 9,594 |
20 to 24 years | 5,516 | 5,821 | 11,337 |
25 to 29 years | 6,144 | 5,372 | 11,516 |
30 to 34 years | 6,167 | 5,388 | 11,555 |
35 to 39 years | 5,553 | 4,531 | 10,084 |
40 to 44 years | 4,329 | 3,859 | 8,188 |
45 to 49 years | 4,857 | 4,355 | 9,212 |
50 to 54 years | 4,474 | 4,349 | 8,823 |
55 to 59 years | 5,003 | 4,061 | 9,064 |
60 to 64 years | 3,485 | 3,903 | 7,388 |
65 to 69 years | 2,928 | 3,763 | 6,691 |
70 to 74 years | 1,999 | 2,754 | 4,753 |
75 to 79 years | 1,882 | 1,446 | 3,328 |
80 to 84 years | 872 | 1,264 | 2,136 |
85 years and over | 652 | 1,561 | 2,213 |
Things to know
What is the population of Orange, CA under 18?
Orange's population under the age of 18 is 28,774, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 20.67% of the total resident population of Orange, CA.
What is the aging population in Orange, CA?
Orange's population aged 65 years and above was 19,121. As per the U.S. Census Bureau's American Community Survey, this population is 13.74% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates